ČSN EN IEC 61158-4-19-ed.4

Industrial communication networks - Fieldbus specifications - Part 4 -19: Data-link layer protocol specification - Type 19 elements

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Podrobné informácie

Označenie: ČSN EN IEC 61158-4-19-ed.4

Dátum vydania: 01.12.2019

Stránok: 490

Krajina: Česká technická norma

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Anotácia

data-link layer provides basic time-critical messaging communications between devices in an automation environment. This protocol provides communication opportunities to all participating data-link entities a) in a synchronously-starting cyclic manner, according to a pre-established schedule, and b) in a cyclic or acyclic asynchronous manner, as requested each cycle by each of those data-link entities. Thus this protocol can be characterized as one which provides cyclic and acyclic access asynchronously but with a synchronous restart of each cycle

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